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New page: {{stub}} right Diagram of the LS100 __NOTOC__ Engine powered rotary jetting is a [[Jetting - general| j...
{{stub}}
[[Image:Treadle_pump_icon.png|right]]
[[Image:Diagram of the LS100.jpg|thumb|right|150px|Diagram of the LS100]]
__NOTOC__
Engine powered rotary jetting is a [[Jetting - general| jetting technique]] in which engine power is used to rotate the drill stem and pump the mud.
A large variety of engine powered rotary jetting rigs are used. Examples of commercial versions used in developing countries are the Lone Star 100, the PAT Drill 201 and the Deep Rock Hydra drill; but many more exist.
Although one would expect a large advantage over manual jetting, engine operated rotary jetting requires the same time and reaches the same depths as the manual operated rotary jetting. The systems show better performance only with regard to ergonomic aspects.
==History and social context==
==Suitable conditions ==
Suitable for weakly cohesive sands and silts.
{{procontable | pro=
- Better performance with regard to ergonomic aspects than manual jetting rigs
|con=
- Does not increase speed or depth as compared to manual operate rotary jetting rigs.
}}
[[Image:Rotary rig in Chad.jpg|thumb|right|150px|Rotary rig in Chad]]
==Technical specification==
[[Image:PAT drill 201.jpg|thumb|right|150px|PAT drill 201]]
====Operation====
[[Image:Self made rotary rig.jpg|thumb|right|150px|Self made rotary rig]]
====Maintenance====
====Manufacturing ====
A self made engine-driven rotary rig is not very difficult to make, although drill bits, drill pipes and engine may have to be specially imported.
==Cost==
The price of these rigs depends and varies between US$ 3000 and US$ 5000.
==Country experiences==
Engine operated rotary jetting is mainly used in Thailand, Laos, Cambodia, Chad, Niger, Nigeria, Burkina Faso, Tanzania, Mozambique, Zambia, Mauritania, Madagascar and Nicaragua.
==Manuals==
==Movies==
==Acknowledgements==
==External Links==
* PAT-Drill - Engine powered drilling equipment and small machines – http://www.pat-drill.com
* Lone Star Bit - Engine powered drilling equipment and small machines - http://www.lonestarbit.com
* Deep Rock - Engine powered drilling equipment and small machines- http://www.deeprock.com
* Drillingfab - Engine powered drilling equipment and small machines - http://www.drillingfab.com
==References==
{{Joinus}}
[[Image:Treadle_pump_icon.png|right]]
[[Image:Diagram of the LS100.jpg|thumb|right|150px|Diagram of the LS100]]
__NOTOC__
Engine powered rotary jetting is a [[Jetting - general| jetting technique]] in which engine power is used to rotate the drill stem and pump the mud.
A large variety of engine powered rotary jetting rigs are used. Examples of commercial versions used in developing countries are the Lone Star 100, the PAT Drill 201 and the Deep Rock Hydra drill; but many more exist.
Although one would expect a large advantage over manual jetting, engine operated rotary jetting requires the same time and reaches the same depths as the manual operated rotary jetting. The systems show better performance only with regard to ergonomic aspects.
==History and social context==
==Suitable conditions ==
Suitable for weakly cohesive sands and silts.
{{procontable | pro=
- Better performance with regard to ergonomic aspects than manual jetting rigs
|con=
- Does not increase speed or depth as compared to manual operate rotary jetting rigs.
}}
[[Image:Rotary rig in Chad.jpg|thumb|right|150px|Rotary rig in Chad]]
==Technical specification==
[[Image:PAT drill 201.jpg|thumb|right|150px|PAT drill 201]]
====Operation====
[[Image:Self made rotary rig.jpg|thumb|right|150px|Self made rotary rig]]
====Maintenance====
====Manufacturing ====
A self made engine-driven rotary rig is not very difficult to make, although drill bits, drill pipes and engine may have to be specially imported.
==Cost==
The price of these rigs depends and varies between US$ 3000 and US$ 5000.
==Country experiences==
Engine operated rotary jetting is mainly used in Thailand, Laos, Cambodia, Chad, Niger, Nigeria, Burkina Faso, Tanzania, Mozambique, Zambia, Mauritania, Madagascar and Nicaragua.
==Manuals==
==Movies==
==Acknowledgements==
==External Links==
* PAT-Drill - Engine powered drilling equipment and small machines – http://www.pat-drill.com
* Lone Star Bit - Engine powered drilling equipment and small machines - http://www.lonestarbit.com
* Deep Rock - Engine powered drilling equipment and small machines- http://www.deeprock.com
* Drillingfab - Engine powered drilling equipment and small machines - http://www.drillingfab.com
==References==
{{Joinus}}
